Evaporator



FIG. 1 is a perspective view of the evaporator showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a view of one side thereof;

FIG. 5 is a view of the other side thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an evaporator, as shown and described. 